Brake disk



FIG. 1 is a perspective view of a brake disk showing my new design;

FIG. 2 is a front elevational view thereof, the rear being a mirrorimage;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view of the brake disk.

The broken lines in the drawings illustrate portions of the brake diskwhich form no part of the claimed design.

CLAIM I claim the ornamental design for a brake disk, as shown anddescribed.